IS200EXHSG3AEC GE EX2100 High-Speed Relay Driver

GE IS200EXHSG3AEC Exciter HS Relay Driver – EX2100 Series

General Electric IS200EXHSG3AEC functions as an Exciter High-Speed Relay Driver Board (EXHS) within the EX2100 Excitation Control system. This board drives DC contactors and pilot relays for de-excitation and field flashing operations. Engineers trust IS200EXHSG3AEC for reliable relay control and signal conditioning in gas, steam, and hydro turbine applications.

Core Technical Specifications

• Brand: General Electric (GE)
• Model: IS200EXHSG3AEC
• Series: EX2100 Excitation Control
• Functional Acronym: EXHS
• Product Type: Exciter HS Relay Driver Board
• Relay Channels: 12
• Relay Coil Voltage: 125 V DC nominal (100-140 V DC range)
• Relay Contact Voltage: 24 V DC nominal from exciter cabinet
• Resistive Load Rating: 2 A at 28 V DC
• Inductive Load Rating: 1 A at 28 V DC for 0.007 seconds (L/R)
• PCB Coating: Normal coating
• Dimensions: 8.26 cm x 4.19 cm x 12.1 cm
• Technology: Surface-mount
• Functional Revisions: A, E
• Artwork Revision: C
• Country of Origin: United States (USA)

Excitation Control Functions

• Drives DC contactor 41 for main excitation control. Essential for current flow regulation in the excitation system.
• Provides pilot relays for field flashing relays 53A and 53B. Initiates and controls field current establishment in synchronous generators.
• Includes pilot relays for KDEP de-excitation relay. Enables safe and controlled de-energization of the excitation system.
• Prevents excessive voltage buildup during shutdown. Ensures operational safety for personnel and equipment.
• Solid-state relay driver paired with high-speed contactor. Delivers fast and precise switching performance.

Signal Conditioning and Transmission

• Conditions de-excitation status signals from EDEX board. Processes critical status information for monitoring.
• Conditions crowbar status signals from EXDE board. Ensures accurate fault detection and reporting.
• Transmits conditioned signals to EMIO system. Enables further processing and instrumentation output.
• Signal integrity maintained through onboard filtering. Eliminates noise before transmission to monitoring systems.
• Real-time status reporting enhances system diagnostics. Operators receive immediate feedback on de-excitation and crowbar states.

Relay Electrical Characteristics

• Relay coil powered from J9 at 125 V DC nominal. Operating range extends from 100 V DC to 140 V DC.
• Relay contacts powered from exciter cabinet at 24 V DC. Separate power source ensures clean contact switching.
• Resistive load capacity: 2 A at 28 V DC. Reliable switching for resistive applications.
• Inductive load capacity: 1 A at 28 V DC for 7 ms. Handles sudden current changes in inductive circuits.
• External suppression required for relay coil. No onboard suppression provided; external transient mitigation protects system components.

Onboard Component Inventory

• Seven relays with industry-standard K nomenclature. Includes K53B_C and K53A_M1 relay configurations.
• Heat sink component for thermal management. Dissipates heat from solid-state relay driver.
• Over fifty capacitors for energy storage. Supports stable operation during transient events.
• Over one hundred resistors. Metal film and carbon composite types for precision and power handling.
• Integrated circuits and transistors. Provide logic control and switching functionality.
• Three d-shell vertical pin connectors. Eight plug connectors of various sizes for system interfacing.
• Factory-installed wire jumpers. Non-customizable, added for initial voltage testing.

Mechanical Design and Mounting Features

• All PCB edges drilled with conductive-ringed holes. Ensures reliable grounding and mounting integrity.
• Two corners of the board clipped away. Facilitates proper alignment within drive assembly.
• Four small notches cut into front edge surface. Purpose-designed for secure installation in EX2100 rack.
• Normal PCB coating provides solid base protection. While not conformal, coating shields components from contamination.
• Installation-minded design simplifies field replacement. Notches and drilled holes ensure consistent mechanical fit.

System Compatibility and Applications

• Integral component of EX2100 TMR turbine control system. Produces field excitation current for AC terminal voltage and reactive VA control.
• Supports new and retrofit steam turbine generators. Compatible with gas and hydro turbine applications.
• Full static excitation control pattern. Provides precise excitation management across diverse generation assets.
• Part of final GE Mark series with Speedtronic technology. Highly sought for repair and continued service.
• IS200EXHSG3AEC functions as Static Exciter High-Speed Terminal board. Critical interface between control logic and high-power excitation components.

Packaging and Delivery

• Each IS200EXHSG3AEC ships in anti-static shielded packaging. ESD foam protects all connectors and components.
• Package includes one GE EXHS relay driver board. No cables, mounting hardware, or software included.
• Direct drop-in replacement for existing EXHS modules. Identical form factor and connector layout.
• We ship via FedEx, UPS, or DHL. Tracking information provided within 24 hours of dispatch.
• International export packaging available. Double-boxed with moisture barrier for air freight.

Contact Information

• Email inquiries: sales@nex-auto.com
• WhatsApp support: +86 153 9242 9628
• Response time: Same business day for all technical and commercial questions.

Frequently Asked Questions

Q: What is the difference between IS200EXHSG3AEC and earlier EXHS revisions?
A: G3AEC includes functional revisions A and E with artwork revision C. It is the mature production version with enhanced relay driver firmware.

Q: How many relay channels does this board provide?
A: IS200EXHSG3AEC features 12 relay channels for driving DC contactors and pilot relays in excitation control applications.

Q: What voltage does the relay coil require?
A: Relay coil operates at 125 V DC nominal. Acceptable range is 100 V DC minimum to 140 V DC maximum.

Q: Does this board provide suppression for relay coils?
A: No. Suppression must be supplied externally. The EXHS board does not include onboard transient suppression components.

Q: What are the K53B_C and K53A_M1 relays used for?
A: These are pilot relays for field flashing relays 53A and 53B. They initiate and control field current establishment in synchronous generators.

Q: Can I use this board in non-TMR applications?
A: Yes. IS200EXHSG3AEC functions in both simplex and TMR EX2100 configurations. Board operation is independent of redundancy level.

Q: What is the typical lead time for IS200EXHSG3AEC?
A: In-stock orders ship within 48 hours. Volume orders typically ship within 5 business days.

Q: Where can I find detailed installation instructions?
A: Refer to GE Industrial Systems manuals and user guides issued with the original product. These contain complete functional and installation information.

Partner: AutoNex Controls Limited – Authorized GE EX2100 parts supplier.